[Xen-devel] redhat4.6-32bit DomU with pv driver can't be saved

[田世坤 <aixt2006@xxxxxxxxx>]

Hi all,

I have some problem with xm save/restore in Xen-4.0.0 & linux-2.6.31.13,

First, the /etc/init.d/xendomains seems do not work properly because of bash version. So I modified it as follow:

root@r02k08027 # diff -up /etc/init.d/xendomains /etc/init.d/xendomains_31

--- /etc/init.d/xendomains  2010-04-08 00:12:04.000000000 +0800

+++ /etc/init.d/xendomains_31   2010-04-19 22:45:35.000000000 +0800

@@ -182,11 +182,11 @@ rdnames()

 

 parseln()

 {

-    if [[ "$1" =~ '(domain' ]]; then

+    if [[ "$1" == '(domain'* ]]; then

         name=;id=

-    else if [[ "$1" =~ '(name' ]]; then

+    else if [[ "$1" == '(name'* ]]; then

         name=$(echo $1 | sed -e 's/^.*(name \(.*\))$/\1/')

-    else if [[ "$1" =~ '(domid' ]]; then

+    else if [[ "$1" == '(domid'* ]]; then

         id=$(echo $1 | sed -e 's/^.*(domid \(.*\))$/\1/')

     fi; fi; fi

 

Then service xendomains start/stop works correctly. But there is a significant problem. I tried to save and restore these VMs:

redhat-4.6-32bit with pv driver, redhat-4.6-32bit without pv driver;

WindowsServer2003-32bit with pv driver (Xenpv-win-32bit-0.97.4.exe), WindowsServer2003-32bit without pv driver;

WindowsServer2008-64bit with pv driver (Xenpv-win-64bit-0.97.4.exe),

WindowsServer2008-64bit without pv driver.

 

Others are OK, only redhat-4.6-32bit domain with pv driver failed. But this VM is the most important for me. When saving it, it blocks, the size of the saved file is always 1.8K:

-rwxr-xr-x 1 root root 1.8K Apr 17 19:08 redhat-4.6-32

 

The error xend.log report is:

DEBUG (XendCheckpoint:124) [xc_save]: /usr/lib64/xen/bin/xc_save 4 3 0 0 4

INFO (XendCheckpoint:423) xc_save: failed to get the suspend evtchn port

 

 

The pv driver of redhat-4.6-32bit are:

[root@localhost ~]# lsmod|grep xen

xen_vnif               28672  0

xen_balloon            17488  1 xen_vnif

xen_vbd                20592  3

xen_platform_pci       73692  3 xen_vnif,xen_balloon,xen_vbd,[permanent]

 

[root@localhost ~]# modinfo xen_vnif

filename:       /lib/modules/2.6.9-67.ELsmp/extra/xenpv/0.1-10.el4/xen-vnif.ko

alias:          xen:vif

alias:          xen:vif

license:        Dual BSD/GPL

vermagic:       2.6.9-67.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4

depends:        xen-platform-pci,xen-balloon

 

[root@localhost ~]# modinfo xen_balloon

filename:       /lib/modules/2.6.9-67.ELsmp/extra/xenpv/0.1-10.el4/xen-balloon.ko

license:        Dual BSD/GPL

vermagic:       2.6.9-67.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4

depends:        xen-platform-pci

 

[root@localhost ~]# modinfo xen_vbd

filename:       /lib/modules/2.6.9-67.ELsmp/extra/xenpv/0.1-10.el4/xen-vbd.ko

alias:          xen:vbd

license:        Dual BSD/GPL

vermagic:       2.6.9-67.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4

depends:        xen-platform-pci

 

[root@localhost ~]# modinfo xen_platform_pci

filename:       /lib/modules/2.6.9-67.ELsmp/extra/xenpv/0.1-10.el4/xen-platform-pci.ko

author:         ssmith@xxxxxxxxxxxxx

description:    Xen platform PCI device

license:        GPL

license:        Dual BSD/GPL

license:        GPL

vermagic:       2.6.9-67.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4

depends:       

alias:          pci:v00005853d00000001sv*sd*bc*sc*i*

alias:          pci:v0000FFFDd00000101sv*sd*bc*sc*i*

 

xm info:

 host                   : SS01

release                : 2.6.31.13

version                : #1 SMP Fri Apr 16 14:58:38 CST 2010

machine                : x86_64

nr_cpus                : 16

nr_nodes               : 2

cores_per_socket       : 4

threads_per_core       : 2

cpu_mhz                : 2400

hw_caps                : bfebfbff:28100800:00000000:00001b40:009ce3bd:00000000:00000001:00000000

virt_caps              : hvm

total_memory           : 24540

free_memory            : 7

node_to_cpu            : node0:0,2,4,6,8,10,12,14

                         node1:1,3,5,7,9,11,13,15

node_to_memory         : node0:7

                         node1:0

node_to_dma32_mem      : node0:5

                         node1:0

max_node_id            : 1

xen_major              : 4

xen_minor              : 0

xen_extra              : .0-rc9-pre

xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 

xen_scheduler          : credit

xen_pagesize           : 4096

platform_params        : virt_start=0xffff800000000000

xen_changeset          : Sat Mar 27 16:01:35 2010 +0000 21078:f3db0ae08304

xen_commandline        : 

cc_compiler            : gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)

cc_compile_by          : root

cc_compile_domain      : (none)

cc_compile_date        : Fri Apr  9 15:34:38 CST 2010

xend_config_format     : 4

Is there anyone can give me a good idea?

 

I’ll try another version of pv driver or another version of redhat…

 

Thanks

 

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